Process for preparing dyeings and prints fast to wetting on cellulosic materials



United States Patent "ce 4 Claims. (61. s-54.2

The present invention relates to a process for preparing dyeings and prints fast to wettingon cellulosic-materials.

Now we have found that dyeings and prints having :good to excellent wet fastness properties can be prepared on natural or regenerated cellulose materials by fixing organic dyestuffs of any class desired, for example azo, anthraquinone or phthalocyanine dyestuifs containing at least one group imparting solubility in water, such as the sulfonic acid or carboxylic acid group, as well as at least one group of the formula I in which R and- R represent alkyl, cycloalkyl, aralkyl or aryl radicals which may carry further substituents, as for example halogen atoms, alkyl, alkoxy,,nitro, sulfonic acid or carboxylic acid groups, at an elevated temperature on cellulose fibers in the presence of substances having an alkaline reaction, as'for example sodium carbonate, potassium ca'rbonate,l sodium bicarbonate, potassium bicarbonate, sodium hydroxide, potassium hydroxide or sodium tn'phosphate. The fixation is advantageously carried out by steaming at a temperature in the range from about 98 to 103 .C. or by heat-setting in the range from 130 to 190 C. approximately.

In the course'of this treatment which may be carried out according to the dyeing or printing processes for reactive dyestuifs generally used in practice, the reactive groups will probably react with those groups of the cellulose which are capable of reaction.

Monoazo dyestuffs as well as pol'yazo dycstuflts are suitable for use in the process of the present invention and, if desired, the heavy metal complex compounds thereof may. be used, too. The reactive group 3,345,122. Patented Oct. 3, 1967 in which R represents an alkyl or an aryl group and nucleus A may contain further substituents, with alkylor aryl-sulfonic acid chlorides. After reduction of the nitro group to form the amino group it is possible to prepare dyestulfs from the amino com-pounds thus obtained according to known methods.

Moreover, compounds of the formula in which R and R represent alkyl, cycloalkyl, aralkyl or aryl radicals may be added in molten or dissolved state, while adding an agent having an alkaline reaction, to vinyl-sulfonic compounds, for instance of the following formula SOBCH=CH2 in which R" represents a nitro or an amino group and nucleus A may contain further substituents. The addition products obtained are the compounds of the formula The following examples serve to illustrate the invention but they are not intended to limit it thereto, the parts being by weight unless otherwise stated.

Example I 2 parts of the ram dyestutf of the following composition H? lTTH-C OCH NaOaS SOaNa (EHr-CHz-IIIS 02-0113 obtained by coupling 1 mol of diazotized [/i-(N-methylsulfonyl-N-methylamino)-ethyl]-3-aminophenyl sulfone with 1 mol of 1 hydroxy 8 acetaminonaphthalene-3,6- disulfonic acid in a neutral medium, are dissolved in 15 parts of hot water containing 4 parts of urea and cooled to 1820 C. Then 1 part of sodium bicarbonate is added and the mixture stirred thoroughly. The dyestuff solution obtained is made up to 50 parts by meansof analginate thickening and stirred thoroughly.

Cotton fabrics which have been printed with the paste prepared in this manner are dried, steamed for 6-10 minutes at 98-100 C., rinsed with water and then treated while hot with a solution containing 3 g. of soap and 1 g. of sodium carbonate per liter. A clear red print is obtained having good wet fastness properties.

3 4 Example 2 Example 4 2 parts of the azo dyestuff of the following composition 2 P s Of ph h y nine y fi f the fOhOWlIlg composition NaOaSQ N=C o= sm-rrn-Q-s oi-oni-cnH I-sorom I] CH8 NaOaS N-C\ /CN -sor-Nn -s oiom-onirr-sozon= CH3 OCH obtained by condensation of 1 mol of copper phthalocy- 3 2O anine-3,3',3"'-tetrasulfochloride with 2 mols of [fl- (N- C COOH methyl-sulfonyl-N methylamino) ethyl] 4-am1nophenyl-sulfone in the presence of sodium bicarbonate, and HO O\ 4 parts of urea are dissolved in parts of water. Then 2 N parts of sodium bicarbonate are added and the solutlon 5 is made up to 50 parts by means of 4% alginate thicken- I ing and thoroughly stirred. CH3 SO2 N CHTOH The cotton fabric which has been printed with the paste C 3 prepared in this manner is dried, steamed for 6-10 m n- 1 utes at 100103 6., rinsed with water and treated whlle SOsNa hot with a solution containing 3 g. of soap and 1 g. of obtained by coupling 1 l f di ti d 5 (N h 1- sodium carbonate per liter of water. A clear turquoise sulfonyl-N-methylamino)ethyl] 3 amino-4-methoxyblue print is obtained havmg a good fastness to hght phenyl-sulfone with 1 mol of 1-(4'-sulfophenyl)-5-pyrand w h azolone-3-carboxylic acid in a neutral medium, are dis- Prints With q a P P 'Q are Obtalned y 11$1hg a 4% solved in 15 parts f water t i i 4 parts f urea, methylcellulose thickenlng instead of the alginate thickenthen 1 part of potassium bicarbonate is added and the g Inentlhned' mixture is stirred thoroughly. The dyestutf solution ob- A y 1S Obtalned Wlth of the y h tained is made up to 50 parts by means of an alginate mentlohed above when pl'oceedlng 1n the following thickening and stirred thoroughly. manner:

A cotton fabric Printed with the paste prepared in 40 u A cotton fabric is impregnated at 30 C., with a soluthis manner is dried, steamed for 6-10 minutes, rinsed non of 20 Parts of the dyeshlfi 111 1000 Parts of Water,

with water and finally treated while hot with a solution squeezefi to a q P absorptlon of Ieferf'ed containing 3 g. of soap and 1 g. of sodium carbonate y Welght drlech Subsequently, the ma teI1a1 1S per liter of water. A clear yellow print is obtained hav- Pregnated Wlth sohlhoh 0f 9 Pa Of Sodlllm Chlorldfi ing good wet fastness properties and an excellent fastness and 10 Parts hydrQxlde In 1000 Parts 9 Water, t fi ht A squeezed to a liquor absorption of 80% and dried. The

Example 3 fabric is steamed for 6-10 minutes at 100-103 C. and

worked up in the manner described above. A turquoise blue dyeing is obtained having the fastness properties mentioned above. NH: Example 5 I 2 parts of the anthraquinone dyestuif of the following formula Oz|S NaOaS S0aNa -S03H fl) NHg SOaNa C Hz-lTT-S 02-0 Ha on; Obtained by coupling 1 mol of diazotized [p-(N-methyl- 0 sulfonyl-N-methylamine) ethyl] 4-aminophenyl-sulfone in a weakly alkaline medium with the monoazo dyestuff prepared from 1 mol of diazotized sulfanilic acid SO2CHaCH2N-SOICH3 2 parts of the disazo dyestufl? of the following composition and 1 mol of 1-amino-8-hydroXynaphthalene-3,6-disulfonic acid in a mineral acid medium, and 5 parts of urea are dissolved in 15 parts of water. Subsequently, 1 part CH3 of sodium bicarbonate is added and the solution is made p to 50 Parts by means of an alglhate thlckenlng, and obtained by condensation of 1 mol of 1-amino-4-bromothoroughly stirred. anthraquinone-Z-siilfonic acid with 1 mol of [B-(N- A cotton fabric which has been printed with the paste methyl-sulfonyl-N-methylamino) ethyl]-3-aminophenylprepared in this manner is dried, steamed for 6-10 minsulfone in a weakly alkaline aqueous medium at an eleutes, rinsed with water and treated while hot With a vated temperature, and 5 parts of urea are dissolved in 15 solution containing 3 g. of soap and 1 g. of sodium carparts of water. Then 1 part of sodium bicarbonate is bonate per liter. A blue-gray print is obtained having good added and the solution is made up to 50 parts by means fastuess properties. of a 4% alginate thickening and thoroughly stirred.

A cotton fabric which has been printed with the paste prepared in this manner is dried, steamed for 6-7 minutes, rinsed with water and eventually treated while hot with a solution containing 3 g. of soap'and 1 g. of sodium carbonate per liter. A clear blue print is obtained having good wet fastness properties and an excellent fastness to light.

A dyeing in a long bath is prepared in the following manner:

0.25 part of the dyestufi mentioned above are dissolved in 150 parts of water. The solution is heated to 60 C., then parts of a fabric made of regenerated cellulose are introduced into the dyebath and 7.5 parts of sodium sulfate are added. After having kept the dyebath for 30 minutes at 60 C., 3 parts of sodium carbonate are added and the temperature is slowly raised to 98-100 C. The dyeing, which takes 90 minutes, is carried out at this temperature. The merchandise is first rinsed with cold water, then with hot water and subsequently after-treated at the boil with a solution containing 3 g. of soap and 1 g. of sodium carbonate per liter of water, A blue dyeing is obtained having an excellent fastness to light and a good fastness to washing.

Example 6 2 parts of the complex copper compound of the azo dyestufi of the following composition HaC-N-SOs-CH:

obtained by coupling 1 mol of diazotized [/S-(N-methylsulfonyl-N-methylamino)-ethyl]-4-aminophenyl sulfone with 1 mol of 1-hydroxy-8-acetaminonaphthalene-3,6-disulfonic acid in a neutral medium and reacting the dyestuif obtained with copper sulfate and hydrogen peroxide in an aqueous weakly acid solution, and 4 parts of urea are dissolved in 15 parts of hot water. The solution is cooled to 18-20 C., 1 part of sodium bicarbonate is added and the whole is stirred thoroughly. The dyestuff solution obtained is made up to 50 parts by means of an alginate thickening and stirred thoroughly.

The cotton fabric which has been printed with the paste prepared in this manner is dried, steamed for minutes, rinsed with water and then treated while hot with a solution containing 3 g. of soap and 1 g. of sodium carbonate per liter of water. A violet print is obtained having good wet fastness properties and an excellent fastness to light.

Prints having equally good properties can be prepared 'by using, instead of the alginate thickening mentioned above, an emulsion thickening of the following composition:

450 parts of a 4% aqueous alginate thickening,

10 parts of the condensation product of a high-molecular fatty acid with polyethylene-glycol,

240 parts of water, and

Example 7 1.5 parts of the azo dyestufi of the following composition 1.5 parts of the azo dyestutf of the following composition Us OBNB SOaNa O CH:

obtained by coupling 1 mol of diazotized [fi-(N-methylsulfonyl-N-3'-chlorophenylamino)-ethyl] 3 amino 4- methoxy-phenyl-sulfone with 1 mol of l-hydroxynaphthalene-4,7-disulfonic acid in a neutral medium, 5 parts of urea and 1 part of sodium carbonate are dissolved in 15 parts of water and made up to 50 parts by means of an alginate thickening.

The cotton fabric which has been printed with the paste prepared in this manner is dried, steamed for 6-7 minutes, rinsed with water and finally treated while hot with a solution containing 3 g. of soap and 1 g. of sodium carbonate per liter of water. A clear red print is obtained having good wet fastness properties.

The fixation of the dyestufi? on the cotton fabric may also be effected by heating the printed and dried fabric for 8 minutes to 140 C. instead of steaming it.

The following table contains a number of further dyestuifs suitable for use in the process of the present invention as well as the tints of the dyeings and prints ob- 300 parts of heavy petrol. tained on cellulose fibers.

No. Composition Tint 1 Ho NHC0CHB Red.

NaO;S S0 Na TABLE COn'tinued No. Composition Tint 25 IIO NH-CO-CH3 Red.

NaOaS SO aNa l C O ONa We claim:

1. A process for preparing dyeings and prints fast to wet processing on cellulose materials, which comprises treating said cellulose materials with a dyestufll of the formula SOa-R wherein A represents the radical of an organic dyestuff molecule, R represents a member selected from the group consisting of lower alkyl, cyclohexyl, phenyl, chlorophenylene, lower alkoxyphenylene, sulfophenylene, carboxyphenylene, benzyl and phenyl ethylene, R represents a member selected from the group consisting of lower alkyl, phenyl, lower alkylphenylene, carboxyphenylene and nitrophenylene, X represents a member selected from the group consisting of alkali metal and ammonium, n represents at least 1, and m and m represent numbers from 0 to 3, the sum m +m being at least 1, in the presence of an alkaline agent at an elevated temperature.

2. A process as claimed in claim 1, wherein the treatment of cellulose material with a dyestuff of the indicated xooo m formula is carried out by way of printing, drying and steaming at a temperature in the range from about 98 to about 103 C.

3. A process as claimed in claim 1, wherein the treatment of the cellulose material with a dyestuff of the indicated formula is carried out by way of padding, drying and steaming at a temperature in the range from about 98 to about 103 C. j

4. A process as claimed in claim 1, wherein the treatment of the cellulose material with a dyestuif of the'indicated formula is carried out by way of printing, drying and then submitting the material to a dry heat treatment at a temperature in the range from about 130 to 190 C.

References Cited UNITED STATES PATENTS 2,670,265 2/1954 Heyna et al 8-'-54.2 X 3,150,916 9/1964 Karyacsony et a1. 854 3,255,173 6/1966 Dehnert et a1 811.212 X NORMAN G. TORCHIN, Primary Examiner.

T. J. HERBERT, Assistant Examiner. 

1. A PROCESS FOR PREPARING DYEINGS AND PRINTS FAST TO WET PROCESSING ON CELLULOSE MATERIAL, WHICH COMPRISES TREATING SAID CELLULOSE MATERIALS WITH A DYESTUFF OF THE FORMULA 